Quick Release Seat Pedestal

1. Field of the Invention:

The present invention relates to a quick release seat pedestal for mounting, for instance, a seat from the floor of a vehicle.

2. Description of the Prior Art:

The present day popularity of recreational vehicles and vans is due in part to the flexibility of these vehicles. An entrepreneur may find a benefit in the vehicle which serves both as transportation for family outings and as a delivery vehicle. Easily removable vehicle seats can greatly increase the utility of such a vehicle by providing increased cargo space for deliveries while permitting more seating when required.

Another trend in vehicle design has been the increasing search for structures which absorb energy to the passenger in the event of a collision. The search is complicated by the need for structures which will deform in a controlled manner to absorb deceleration energy but not collapse. An overly rigid structure transfers all of the stress of a collision to the passenger, increasing the risk of injury. A structure lacking sufficient strength, however, might collapse prematurely or uncontrollably under the impact of a collision causing the passenger to suffer secondary jarring or impact.

The need for flexibility in vehicle seating has lead to the proposals of numerous different mechanisms for locking a seat or a seat pedestal into place on the floor of a vehicle. Examples of such prior removable vehicle seating (or seating pedestals) are disclosed in U.S. Pat. Nos.: 4,277,043; 4,376,522; 4,396,175; 4,667,917; 4,759,580; 4,789,126; 4,805,952; 4,865,377; 4,971,379; 5,125,711. Unfortunately, none of these references addresses the need for a seat pedestal structure which will positively hold the seat in place during normal operating conditions and which is easily operable to be released from the pedestal floor to be quickly removed in an efficient fashion to free the vehicle floor of any significant obstacles.

Many of these references include a base or floor plate which could present an impediment to vehicle loading when the seat has been removed. Notable among these is U.S. Pat. No. 4,805,952 which includes a base plate with a section that is sharply raised to be formed with two transverse slots. This raised portion with its large slots would present an obstacle to the task of fitting objects into the vehicle without damage. In addition, the person loading the van would have to exercise care not to trip over the raised portion or catch his or her feet or shoes in the slots.

Also problematic is the base shown in U.S. Pat. No. 4,667,917 with its transverse elevated bar. While adequate for its intended purpose, it must be recognized that the bar remaining in the vehicle after removal, not only presents a trip hazard to persons moving about in the vehicle but presents an obstacle to objects resting flat on the vehicle floor.

Another problem with the prior art is the complexity of the connecting and locking mechanisms and the potential for an insecure connection allowing for the seat to wobble and shake under vehicle motion. U.S. Pat. No. 4,667,917, for example, includes a base with a transverse bar. The seat pedestal includes a rotatable hook with a handle. The hook connects around the transverse bar to lock the seat into place. In practice, however, it is difficult to construct the bar and the hook with sufficiently close tolerance so that the hook fits snugly and firmly enough around the bar to positively prevent the seat from shifting during vehicle movement. The U.S. Pat. Nos. 4,759,580; 4,865,377; 4,971,379 and 5,125,711 also employ hooks to hold a seat or pedestal in place. In all these cases, the use of the hooks makes for a complicated and somewhat unstable design. In addition, these designs require that the seat be carefully aligned with respect to the base in order to be attached.

U.S. Pat. No. 4,789,126 describes a seat pedestal which locks into place primarily by means of a rotatable locking pin engaging with a circular locking ramp. Although this device also includes three tab/slot combinations to reinforce the connection between base and pedestal, the presence of only one locking point produces a device with some lack of stability.

U.S. Pat. No. Des. 331,342 shows a pedestal design which could deform during impact in such a manner as to help protect the passenger from the collision impact. However, the release employed in practice to hold the pedestal in place fails to provide for secure and stable mounting while providing for a quick and convenient release for removal of the pedestal.

Pedestal anchorage devices have been proposed which incorporate base plates formed with a raised annular track defining an upwardly facing surface formed with key holes within which is received cleat-like fasteners mounted to the underside of the bottom plate of a pedestal box. The box then also includes a retractable pin so that the box may be positioned on the base plate with the cleats received in the enlarged portion of the key holes, the box then rotated to slide the cleats into the elongated grooves of the key holes and the pin then released to lock the box in a rotary position relative to the base plate. A device of this type has been marketed by a company related to applicant, Adnik Recreational, Inc., Elkhart, Ind., under the designation "Removable Pedestal". The box was configured with outwardly and upwardly sloping side walls to collapse and provide energy absorption upon impact. Such devices, while enjoying commercial success and providing satisfactory performance, required the user, in order to release the pedestal, to retract the locking pin, rotate the box and lift it off the seat plate in a rather awkward maneuver. Such removal required torquing or rotating of the box and to release the cleats from the keyways. Consequently, any irregularity or deformity between the box and base plate could result in the locking mechanism becoming hung up thus resisting relative rotary movement and requiring application of greater torque forces. Such requirement for increased torque forces then increased the likelihood of back injury or the like to the pedestal installer. Also, the base plate required an annular raised ring which could contribute somewhat to instability of the mounting of the pedestal box and could fail to provide the desired support for controlled collapse of the pedestal upon impact to thereby possibly reduce the effectiveness of the pedestal box to absorb energy upon impact.

Other box pedestals have been proposed which incorporate a channel-like structure defining an upwardly facing wall, vertical side walls and inturned bottom flanges which were then attached to the rib work of the vehicle floor. A device of this type has been marketed by Auranco Metal Fabrications, 2009 Middlebury Street, Elkhart, Ind. 48515. Such devices have proven awkward to install and remove from the vehicle and do not exhibit the desired strength to assure secure support of the seat and fail to provide for any controlled crushability upon impact of the vehicle.

Consequently, there exists a need for a seat pedestal assembly in which a seat mounting box element could be quickly and easily connected with, and later easily released from, a base plate element attached to the floor of a vehicle and in which presents a solid, wide-stanced connection between pedestal and base. There is also the need for a seat pedestal assembly which will deform under the impact of a frontal collision in such a manner as to cushion the impact of the collision on the seat occupant.

A quick release pedestal seat mount including a low profile rectangular planar base plate and a seat mounting box which includes a bottom wall and fastening cleats with shanks that project downwardly from the bottom wall to terminate in enlarged in cross section heads. The base plate is formed with a plurality of recesses defining pockets disposed at the four corners thereof and formed with respective forwardly extending key hole shaped fastener openings for sliding receipt of the respective cleats.

A pair of laterally spaced apart latching slots are formed in spacial alignment in the base plate and bottom wall of the mounting box, respectively. A lock mechanism is formed by a pair of rocker arms pivotally mounted on a pair of upwardly projecting ears attached to the bottom plate. Each rocker arm is formed with a free extremity defining a downwardly projecting dog configured to project through respective aligned latching slots to lock the bottom wall against movement relative to the support plate to secure such cleats in their locked positions.

In the preferred embodiment, the box includes reinforcing ribs pressed from such bottom wall and side walls to thereby provide a desired degree of resistance by the forward portion of such side walls to downward collapse upon loading thereof by a passenger constrained therein upon impact of the forwardly moving vehicle to thereby provide for a gauged deformation under the passenger load and consequent shock absorption. The mounting box is further formed with a pair of upwardly and outwardly diverging side walls on the opposite sides of the bottom wall. These side walls are turned in at the upper edges to form seat mounting flanges.

Other objects and features of the invention will become apparent from consideration of the following description taken in conjunction with the accompanying drawing.

FIG. 1 is a perspective view of a quick release pedestal mount embodying the present invention;

FIG. 2 is a top plan view, in enlarged scale, of the pedestal mount shown in FIG. 1;

FIG. 3 is a left side view, in enlarged scale, of the pedestal mount shown in FIG. 1;

FIG. 4 is a partial vertical sectional view taken along the line 4--4 of FIG. 2;

FIG. 5 is a partial vertical sectional side view taken along the line 5--5 of FIG. 2;

FIG. 6 is a partial vertical sectional side view taken along the line 5--5 of FIG. 2;

FIG. 7 is a vertical sectional side view, in enlarged scale, taken along the broken line 7--7 as shown in FIG. 2, and showing the mount unlocked from the base plate.

FIG. 8 is a horizontal sectional view taken along the line 8--8 of FIG. 4;

FIG. 9 is a horizontal sectional view taken along the line 9--9 of FIG. 8;

FIG. 10 is a horizontal sectional view taken along the line 10--10 of FIG. 7;

FIG. 11 is a detailed view, in enlarged view, taken from the circle designated 11 in FIG. 4;

FIG. 12 is a top plan view of a second embodiment the quick release pedestal mount embodying my present invention;

FIG. 13 is a top plan view of a second embodiment of a quick release pedestal mount embodying my present invention;

FIG. 14 is a partial vertical sectional side view taken along the line 14--14 of FIG. 13;

FIG. 15 is a partial vertical sectional side view taken along the line 15--15 of FIG. 13;

FIG. 16 is a partial vertical sectional side view similar to FIG. 15;

FIG. 17 is a partial vertical sectional side view similar to FIG. 15; and

FIG. 18 is a partial vertical sectional side view similar to FIG. 15.

Referring to FIG. 1, the quick release pedestal mount 10 of the present invention includes, generally, a seat mounting box 12 carried releasibly on and fastened to a rectangular low profile base plate 14 by means of front and rear pairs of over-sized rivets defining hold-down cleats 16 and 17 formed with respective enlarged heads 18 and 19 respectively (FIGS. 2 and 4). The heads 18 and 19 are arranged to be received in respective front and rear pairs of recesses which define pockets 20 and 22 in the base plate 14. Such box 12 may be slid forwardly to engage such cleats 16 and 17 into front and rear pairs of key hole shaped fastener openings, generally designated 24 and 26, formed in the base plate forwardly of the respective pockets 20 and 22 (FIG. 12).

Referring to FIGS. 1 and 5, laterally spaced apart clearance slots 28 and 30 are formed in the bottom wall 32 of the mounting box 12. Lock slots 34 and 36 are formed in the base plate (FIG. 12) in positions corresponding with clearance slots 28 and 30. These corresponding pairs of slots, when aligned, releasibly receive respective downwardly projecting dogs 38 and 40 (FIGS. 1 and 5) formed at the rear ends of respective horizontally disposed rocker arms, generally designated 42 and 44.

Carried pivotally from the rear ends of such rocker arms is a kicker, generally designated 46, formed with laterally disposed lever arms 48 and 50. Such lever arms are rotatably attached to rocker arms 42 and 44 by means of respective pivot pins 51 and 53 and are formed at their free extremities with respective nose cams 52 and 54 which are configured to, upon raising of the rear of the kicker 46, orbit downwardly and engage the support plate as shown in FIG. 7 to, upon continued orbiting, raise the respective dogs 38 and 40 out of engagement with the respective base plate lock slots 34 and 36 and to kick the seat mounting box 12 rearwardly relative to the base plate 14 to thereby disengage the respective front and rear pairs of cleats 16 and 17 from the respective pairs of fastener openings 24 and 26 (FIG. 12).

The rocker arms 42 and 44 include respective horizontal beams 47 and 49 (FIG. 1) formed at their respective rearward extremities with downturned hooks defining the respective dogs 38 and 40. Referring to FIGS. 4-6, the forward extremities of such arms are formed with respective downturned spring-retaining pegs 66. Referring to FIGS. 1, 2 and 5, the rocker arms 42 and 44 are carried from respective ears 56 and 58 by means of respective pivot pins 57 and 59. Coil compression springs 62 and 64 are sandwiched between the front ends of the respective rocker arms and the bottom wall 32 and have their top ends coiled about the downwardly projecting pegs 66 to urge such arms clockwise as viewed in FIG. 5.

The upwardly projecting ears 56 and 58 are formed by the vertical flanges of respective angles, generally designated 70 and 72. The respective horizontal flanges 73 and 74 are secured to the top side of the bottom wall 32 by means of the flared out top ends of the respective rearward pair of rivet fasteners 17 (FIG. 4).

As shown in FIG. 12 the base plate 14 is generally square in plan view with rounded corners and includes a central slightly elevated but suspended planar sheet 82 (FIG. 12) formed at its marginal edges with a down turned peripheral rim 84 which serves to support the sheet and elevate it about 3/8" from the floor 86 of the vehicle as shown in FIG. 7. Formed at the four corners of such plate are the respective front and rear pairs of horseshoe shaped downwardly depressed pockets 20 and 22 which are formed at their front extremities with transversely extending receiver slots 92 and 94, respectively, which form the enlarged portions of the respective front and rear pairs of key hole shaped fastener openings 24 and 26, respectively. These openings are further formed with reduced in transverse width slide grooves 96 and 98 respectively, projecting forwardly from receiver slots 92 and 94 respectively.

Referring to FIGS. 10-12, formed at the forward extremities of the respective slide grooves 96 and 98 are downwardly depressed dimples 97 and 99, respectively, which are resilient and angle forwardly and downwardly to define wedge respective surfaces 101 (FIG. 11).

With continued reference to FIG. 12, formed at the front extremity of the base plate 14 are respective open ended release slots 104 terminating at their respective closed ends in cam abutment surfaces 106 for engagement by the respective nose cams 52 and 54 (FIGS. 1 and 6).

Referring now to FIGS. 1, 2 and 3, the mounting box 12 is conveniently formed of 14 gauge sheet metal and is configured with oppositely disposed, upwardly and outwardly angled side walls 108 and 110 which then turn inwardly at their upper extremities to form seat mounting flanges 112 and 114, respectively, for receipt of the opposite sides of a passenger seat (not shown) to be mounted thereon. Mounting holes 116 are provided for receipt of mounting bolts to mount the seat. Seat belt mounting bores 118 and 119 are formed at the rear of the side walls for receipt of bolts to mount seat belt fittings (not shown).

The mounting box 12 is further formed with pairs of forwardly and rearwardly disposed pressed out wrinkles defining reinforcing ribs 120 and 122 which wrap around the lower corners to reinforce the box and cooperate with the thickness and strength of the bottom and side walls 108 and 110 to provide a predetermined supporting force to resist the downward forces applied to the front thereof by a restrained passenger in the event of a frontal vehicle collision.

In operation, the seat mounting box 12 is installed on the base plate 14 by placing the pedestal 10 on the base 14 so that front and rear cleats 16 and 17, respectively, nest into the front and rear pockets 20 and 22 in the base (FIGS. 2 & 4). The pedestal 10 is then pushed forwardly causing the cleat heads 16 and 17 to slide through the fastener opening slots 92 and 94. The cleat shanks will then pass through the slide grooves 96 and 98 to engage the upwardly facing shoulders of the rivet heads under the respective dimples to engage the respective wedge surfaces 101 to hold the box tightly to the base plate and prevent vibration between the two.

Such engagement of the cleat shanks with the front ends of the slide grooves 96 and 98 will register the respective dogs 38 and 40 over the respective lock slots 34 and 36 in the base plate to allow the respective springs 62 and 64 to bias the rocker arms clockwise around their respective pivot pins to drive the respective dogs downwardly into such lock slots and lock the box firmly in its forward locked position. In this position, the weight of the kicker handle 46 will maintain the kicker rotated to its counterclockwise retracted position as shown in FIGS. 4 , 5 and 15.

Should the vehicle in which the subject pedestal is mounted become engaged in a frontal impact, the vehicle floor and base plate 14 will typically be abruptly stopped. The momentum of the passengers will typically thus be thrust forwardly against the restraint system anchored to the fastener bores 118 and 119 thus applying an upward and forward force to the rear extremities of the respective side walls 108 and 110 due to the force of the passenger acting forwardly on such restraint mechanism. The momentum of the passenger will also typically act downwardly on the front extremity of the seat thus applying downwardly compressive forces on the forward extremities of the side walls. Consequently, the upwardly and forwardly acting forces on the rear extremity of the side walls will tend to draw the upper extremities of such side walls upwardly and inwardly against the restraint provided by the heads of the respective rearward pair of cleats 17 held captive under the base plate 14 at the marginal edges of the rearward pair of slide grooves 98. This action will thus tend to raise the rearward ends of the side walls while the forward and downward force of the decelerated passenger on the front of the seat (not shown) tends to drive downwardly on the forward extremity of the seat thus pressing downwardly on the forward extremity of the mounting flanges 112 and 114 at the tops of the respective side walls 108 and 110 (FIG. 1). The forward extremities of such side walls will thus tend to buckle and, upon application of a predetermined downward force, will buckle outwardly in their medial forward portions to thus absorb some of the energy generated as a result of the frontal impact. By constructing the box of 14 gauge, grade 1023 high maganese 0.24 sheet metal and forming the pairs of forwardly and rearwardly disposed transverse reinforcing ribs 120 and 122 wrapped around the lower corners to cooperate in providing the necessary resistance to downward and outward flexing of such side walls at the front extremities of the box, combined with the ten degree upward and outward angle of such side walls I have selected, I have discovered the construction of the present invention will meet federal criteria legislated for reducing head injury and commonly referred to as head injury criteria (HIC).

It will be appreciated that, even on rebound of the passenger's weight from the restraint system, the engagement of the rocker arm dogs 38 and 40 with the ends of the respective lock slots 34 and 36 will serve to prevent significant rearward shifting of the box relative to the mounting plate 14. Thus, even with any rear end collision or rebound from a frontal collision, the pedestal box will be held locked firmly in position with the hold down cleats positively securing it and the supported seat in position for the safety of the passenger.

In the event the recreational vehicle in which the pedestal is installed is to be used for the transportation of goods or products, the pedestal box may expeditiously be removed. This task is expeditiously accomplished by the user merely grasping the kicker 46 in the position shown in FIG. 5 and rotating it upwardly and forwardly to thus orbit the kicker arms 48 and 50 about the pivot pins 42 and 44 to drive the nose cams 52 and 54 downwardly through the respective clearance slots 28 and 30 in the bottom wall to pass downwardly into the release slots 104 to engage the back edges 106 thereof so that continued clockwise rotation of such kicker, as shown by the direction of the arrow in FIG. 6, will provide for the upward forces thereon to lift the rear extremities of the rocker arms 42 and 44 thus raising the dogs 38 and 40 clear of the lock notches 34 and 36. Continued clockwise rotation of the kicker from the position shown in FIG. 6 will further cause such kicker to apply a rearwardly acting force on the respective rocker arms and, consequently, draw the box rearwardly to the receiver position with the cleats clear of the keyhole slots 92 and 94 (FIG. 12) and the cleat heads 18 and 19 positioned in the respective pockets 20 and 22 clear of the underside of the base plate. The box may then be easily and conveniently picked up to dismount it from the base plate and remove it from the vehicle. Thereafter, the base plate 14 provides a relatively low profile without significant projecting obstructions so that products and packages may be conveniently loaded into the vehicle without encountering significant obstacles and enabling passengers to move about in the vehicle without concern for stumbling over high profile projections.

The embodiment of the pedestal mount shown in FIGS. 13-18 is similar to that shown in FIGS. 1-12 and incorporates a base plate, generally designated 192, formed with the peripheral downturned flange 127 supporting the suspended central plate 200 which is formed with the respective release slots 129 (FIG. 17) terminating in their respective forward extremities with the cam edges 131. Formed forwardly thereof are release notches 133 formed at their rearward ends with cog tooth engaging edges 135. The base plate further includes a bore 117 formed centrally in the rearward portion thereof (FIG. 14). Welded under such bore in alignment therewith is a nut 119. Formed in the suspended central plate 200 of the base plate are respective front and rear pockets, each forming key hole-shaped hold down slots 163.

A pedestal box, generally designated 172, is formed with clearance slots 168 and carries ears 155 on the bottom wall thereof which mount the rocker arms, generally designated 154, by means of pivot pins 156. The rocker arms 154 are formed at their rearward extremities with downwardly projecting dogs 166. Such rocker arms are formed medially with respective downwardly opening clearance notches 126 for clearing the reinforcement wrinkles defining the reinforcing ribs 122. Referring to FIGS. 14-18, the forward extremities of such arms are formed with respective downturned spring-retaining pegs 160. Coil compression springs 162 are sandwiched between the front ends of the respective rocker arms and the bottom wall 167 and have their top ends coiled about the downwardly projecting pegs 160 to urge such arms clockwise as viewed in FIG. 15.

Carried from the upper portion of the dogs 166 by means of pivot pins 158 is a kicker handle, generally designated 124, which incorporates laterally spaced apart kicker arms 152 connected together at their one extremity by means of a laterally extending hand grasp handle 150. Formed at the opposite end of such arms 152 are respective nose cams 138 which are formed with forwardly facing cam surfaces configured to be received in the slots 129 and engage the cam edges ends 131 as shown in FIGS. 16-18. The arms 152 are further formed with an arcuate rider surface 140 which curve forwardly from the respective nose cam 138 to then turn radially outwardly and form respective cog teeth 134 having rearwardly facing tooth surfaces 144 for engagement with the respective release slot ends 135. The respective arms 152 are mounted to the respective rocker arms 154 by means of elongated pivot slots 130 which receive the pivot pins 158 to provide for limited lost motion between such kicker arms and rocker arms as the rocker arm is raised up to the position shown in FIG. 15.

Referring to FIG. 13, the bottom wall of the box 172 is formed in its rearward central section with a window 171. Formed forward of such window are front and rear pairs of over-sized rivets defining hold-down cleats 164 having respective enlarged heads 165 (FIGS. 13 and 15). The heads 165 are arranged to be received in respective front and rear pairs of recesses which define key-hole shaped hold down slots 163 in the base plate 192. Such box 172 may be slid forwardly to engage such cleats 164 into front and rear pairs of hold down openings 163. Formed in the reinforcing ribs forward of such window 171 are respective laterally extending slots 184 which receive therein the longitudinal shank 180 of a flexible tether, generally designated 181. The tether is formed on its forward extremity with a laterally projecting cross member 186 to define a T shape and act as a stop to limit forward telescopical movement of such tether. In the preferred embodiment the tether is constructed of a high density plastic. The tether mounts at its free extremity to a safety knob 176 which includes in its underside a bearing race 177 which is press fit into a bore 179 in the free end of such tether. Carried from the knob 176 is a threaded shaft 178 which is received through the bore 117 in the base plate 192 to screw into a threaded bore and the nut 119 welded thereto (FIG. 14).

The pedestal mounts shown in FIGS. 13-18 operate similar to that for the mount shown in FIGS. 1-12. It will be appreciated that, in practice, the base plate 192 may be integrated into the floor of the vehicle or may be installed in the aftermarket for installation by the owner. The base plate 192 is bolted to the floor of the recreational vehicle and when it is desirable to mount the pedestal box 172, it is positioned over such base plate with the cleats 164 received in the pockets rearward of the key way shaped hold down openings. The positioning of the box in the position shown, for instance, in FIG. 8 relative to the base plate 192 serves to position the dogs 166 and cog teeth 134 generally over the respective slots 133. By reaching under the seat mounted on the box, the operator may then merely grasp the hand grasp handle 150 to rotate the kicker arms 152 counterclockwise to thus rotate them about their respective pivot pins 158 causing the cog tooth surface 144 to engage the forwardly facing slot end 135 (FIG. 15) so that further counterclockwise rotation will, because of the horizontal alignment of the respective pins 156 and 158, drive the respective rocker arms forwardly to thus also drive the box 172 forwardly relative to the base plate to dispose it in its locking position.

When engaged in such locking position with the cleats 164 fully forward in the hold down slots, the user can check the positioning by grasping the safety handle 176 and pulling it rearwardly to the full extent allowed by the stop 186 (FIG. 14). Then, if the threaded shaft 178 aligns with the bore 117 in the base plate and the underlying nut 119, by merely rotating the handle 176 the shaft will screw into the nut 119. This then provides an additional safety feature whereby the operator can be assured that the hold down cleats 164 have been securely locked in their locking position. Subsequently, when it becomes desirable to remove the seat from the vehicle, the operator can quickly and rapidly grasp the safety knob 176 and unscrew the shaft 178 from the nut 119 thus freeing the tether 181.

The operator may then grasp the handle 158 and raise the kicker arms 152 from their retracted position thereby rotating such arms counterclockwise. It will be appreciated that the lost motion slot 138 in the rocker arms 152 will provide for initial travel of the pivot pin and rotation of the rocker arms in a clockwise direction before any appreciable upward force is applied to the rearward extremities of the respective rocker arms 154. When the bottom ends of the respective slots 130 engage the pivot pins 158, as shown in FIG. 16, further rotation of such kicker arms 152 in the clockwise direction will apply an appreciable upward force component to the rear ends of the rocker arms 154 thus raising the dogs 153 upwardly to the position shown in FIG. 17.

Continued rotation of the kicker arms 152 beyond this release position will cause the nose cam 138 to engage the edge 131 (FIGS. 17 and 18) so that continued rotation of the rocker arms 152 will draw the box 172 rearwardly to thus draw the cleats 164 rearwardly of the hold down slots 163 to thereby free such box from attachment to the base plate 192 for convenient removal thereof.

From the foregoing, it will be appreciated that the pedestal mount of the present invention is of inexpensive and sturdy construction and will provide for convenient installation and removal of the pedestal box. The box when secured in position on the base plate will provide a sturdy and secure support and is itself convenient to install and remove.

Various modifications and changes may be made with regard to the foregoing detailed description without departing from the spirit of the invention.